{{extend "group_document.html"}}

{{block group_nav}}
<div class="nav">
    <a href="/group/{{=group.name}}">{{=group.caption}}</a> /
    <a href="/group/{{=group.name}}/document">Document</a> /
    <a href="/group/{{=group.name}}/document/category/{{=category.id}}">{{=category.name}}</a> 
</div>
{{end}}